CN219773922U - Anti-jamming buffering hinge structure - Google Patents

Anti-jamming buffering hinge structure Download PDF

Info

Publication number
CN219773922U
CN219773922U CN202321074750.4U CN202321074750U CN219773922U CN 219773922 U CN219773922 U CN 219773922U CN 202321074750 U CN202321074750 U CN 202321074750U CN 219773922 U CN219773922 U CN 219773922U
Authority
CN
China
Prior art keywords
hinge
arm
rocker arm
piston rod
hinged
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202321074750.4U
Other languages
Chinese (zh)
Inventor
张尧东
曾凡月
张伟
石远峰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Tute Precision Hardware Technology Co ltd
Original Assignee
Guangdong Tute Precision Hardware Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Tute Precision Hardware Technology Co ltd filed Critical Guangdong Tute Precision Hardware Technology Co ltd
Priority to CN202321074750.4U priority Critical patent/CN219773922U/en
Application granted granted Critical
Publication of CN219773922U publication Critical patent/CN219773922U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

The utility model discloses an anti-jamming buffering hinge structure, which comprises a hinge cup, a hinge arm and a rocker arm assembly, wherein the rocker arm assembly comprises an outer rocker arm and an inner rocker arm; a damper is arranged in the hinge arm and comprises a cylinder body and a piston rod, and the inner rocker arm is in transmission connection with the piston rod through a linkage block; one end of the inner rocker arm is hinged with the hinge arm through a first pin shaft, and a bulge is arranged on the linkage block; when the hinge cup is hinged and closed relative to the hinge arm, the hinge cup drives the inner rocker arm to swing, and then drives the linkage block to swing so as to drive the piston rod to move relative to the cylinder body, thereby realizing damping closure; when the hinge cup is completely closed, the protrusion on the linkage block is abutted with the first pin shaft to limit the moving stroke of the piston rod. Therefore, through arranging the bulge on the linkage block, after the hinge is closed, the bulge can be abutted with the first pin shaft arranged on the inner rocker arm, so that the movable stroke of the piston rod can be limited, and the piston rod is prevented from further moving forwards to cause clamping.

Description

Anti-jamming buffering hinge structure
Technical Field
The utility model relates to the technical field of hardware parts, in particular to an anti-jamming buffering hinge structure.
Background
The traditional hinge has no buffering force when being opened or closed, the connection between the cabinet door and the cabinet body is easy to break, a mode of adding a damper in the hinge is designed by a merchant later, and when the hinge is in a completely opened state to a closed state, a damper piston rod in the hinge is gradually stretched, so that the hinge has buffering force.
At present, the hinge is mainly applied to a wardrobe or a cupboard, and a door body on the wardrobe or the cupboard is in a closed state for most of the time, namely, the hinge is in a closed state for a long time, a damper piston rod in the hinge is fully stretched, meanwhile, due to the fact that a gap exists between the piston rod in the damper in assembly, the piston rod is easy to extend forwards under the action of oil pressure for a long time, and then the piston rod is blocked, so that the hinge cannot be opened.
Therefore, how to provide a buffering hinge structure capable of preventing the piston rod of the damper from being locked is a technical problem to be solved by the person skilled in the art.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides an anti-blocking buffer hinge structure, wherein a bulge is arranged on a linkage block, and after the hinge is closed, the bulge can be abutted with a first pin shaft arranged on an inner rocker arm, so that the moving stroke of a piston rod of a damper can be limited, and the piston rod is prevented from being blocked due to further forward movement.
The utility model adopts the technical proposal for solving the problems that:
the utility model provides an anti-sticking buffering hinge structure, includes hinge cup, arm and rocking arm subassembly, the rocking arm subassembly includes outer rocking arm and interior rocking arm, outer rocking arm with the both ends of interior rocking arm all respectively with the hinge cup reaches the arm is articulated, wherein:
a damper is arranged in the hinge arm and comprises a cylinder body and a piston rod, and the inner rocker arm is in transmission connection with the piston rod through a linkage block;
one end of the inner rocker arm is hinged with the hinge arm through a first pin shaft, and a bulge is arranged on the linkage block;
when the hinge cup is hinged and closed relative to the hinge arm, the hinge cup drives the inner rocker arm to swing, so as to drive the linkage block to swing to drive the piston rod to move relative to the cylinder body, and further realize damping closing of the hinge cup; when the hinge cup is completely hinged and closed, the protrusion is abutted with the first pin shaft to limit the moving stroke of the piston rod.
Further, first bosses are arranged on two sides of the linkage block, and limiting grooves which can be used for the first bosses to be clamped in to realize transmission are formed in the inner rocker arms.
Further, two lugs arranged at intervals are further arranged on the linkage block, and one end of the piston rod extends into the space between the two lugs and is hinged with the two lugs through a bolt.
Further, second bosses are arranged on two sides of the inner rocker arm, and the end faces of the second bosses are abutted against the inner side walls of the hinge arms; and the second boss is provided with an avoidance hole through which the first pin shaft can pass.
Further, the other end of the inner rocker arm is hinged with the hinge cup through a second pin shaft; one end of the outer rocker arm is hinged with the hinge arm through a third pin shaft, and the other end of the outer rocker arm is hinged with the hinge cup through a fourth pin shaft;
the second pin shaft and the fourth pin shaft are integrally formed into a U-shaped structure.
Further, the device further comprises an elastic member, wherein:
the inner rocker arm is provided with an arc bulge; the elastic piece comprises a first elastic arm and a second elastic arm, the first elastic arm is pressed against the hinge arm, and the second elastic arm is pressed against the arc-shaped bulge;
the elastic piece generates closing force to the hinge cup through the inner rocker arm.
Further, the elastic piece is a torsion spring, two ends of the torsion spring are respectively provided with a first elastic arm, and the middle part of the torsion spring is provided with a second elastic arm.
Further, still include the base, the arm of hinge slidable suit is in the base outside, wherein:
the cylinder body of the damper is hinged with the hinge arm through a rotating shaft, and first long holes which are in sliding fit with the rotating shaft are formed in two sides of the base.
Further, a first threaded hole is formed in one side of the top of the hinge arm, a second long hole is formed in the position, corresponding to the first threaded hole, of the top of the base, and a first threaded connecting piece in threaded fit with the first threaded hole is arranged in the second long hole in a penetrating mode.
Further, a third long hole is formed in the other side of the top of the hinge arm, a second threaded hole is formed in the position, corresponding to the third long hole, of the top of the base, and a second threaded connecting piece in threaded fit with the second threaded hole is arranged in the third long hole in a penetrating mode.
In summary, the anti-jamming buffer hinge structure provided by the utility model has the following beneficial effects:
(1) According to the anti-blocking buffer hinge structure, the bulge is arranged on the linkage block, and can be abutted with the first pin shaft arranged on the inner rocker arm after the hinge is closed, so that the movable stroke of the piston rod of the damper can be limited, and the piston rod is prevented from being blocked due to further forward movement.
(2) According to the anti-blocking buffer hinge structure, the first bosses are arranged on the two sides of the linkage block, and are blocked in the limiting grooves of the inner rocker arm and slide, so that transmission connection between the first bosses and the second bosses is realized; through setting up first boss in order to replace the axis body, when reduce cost for hinge structure is succinct more, installs and removes more conveniently.
(3) According to the anti-jamming buffering hinge structure, the second bosses are arranged on the two sides of the inner rocker arm and are abutted against the inner side walls of the hinge arms to realize the bearing of the door body, and meanwhile, the contact area between the second bosses and the hinge arms is small, so that the rotating friction force between the second bosses and the hinge arms can be effectively reduced in the closing process of the hinge, and the service life of the hinge is prolonged.
Drawings
FIG. 1 is a schematic diagram of an anti-seize buffering hinge structure of the present utility model;
FIG. 2 is an exploded view of the anti-seize buffering hinge structure of the present utility model;
FIG. 3 is a schematic view of the structure of the inner rocker arm in the anti-seize buffering hinge structure of the present utility model;
FIG. 4 is a schematic diagram of a linkage block in the anti-seize buffering hinge structure of the present utility model;
FIG. 5 is a schematic view of the structure of the anti-seize buffering hinge structure of the present utility model after the hinge arm is hidden;
FIG. 6 is a cross-sectional view of the anti-seize cushioning hinge assembly of the present utility model in a closed door condition;
fig. 7 is a sectional view showing the anti-seize buffering hinge structure of the present utility model in a door-opened state.
Wherein the reference numerals have the following meanings:
1. a hinged cup; 2. an arm hinge; 201. a first threaded hole; 202. a third long hole; 3. an outer rocker arm; 4. an inner rocker arm; 401. a limit groove; 402. arc-shaped bulges; 403. a second boss; 404. avoidance holes; 5. a damper; 501. a cylinder; 502. a piston rod; 6. a linkage block; 601. a protrusion; 602. a first boss; 603. a lug; 7. a first pin; 8. a second pin; 9. a third pin; 10. a fourth pin; 11. a fifth pin; 12. a plug pin; 13. a rotating shaft; 14. an elastic member; 1401. a first elastic arm; 1402. a second elastic arm; 15. a base; 1501. a second long hole; 1502. a second threaded hole; 1503. a first long hole; 16. a first threaded connection; 17. a second threaded connection.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
In the description of the present utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.
Referring to fig. 1-7, the utility model provides an anti-seize buffering hinge structure, which comprises a hinge cup 1, a hinge arm 2 and a rocker arm assembly, wherein the rocker arm assembly comprises an outer rocker arm 3 and an inner rocker arm 4, both ends of the outer rocker arm 3 and both ends of the inner rocker arm 4 are respectively hinged with the hinge cup 1 and the hinge arm 2, and the inner rocker arm 4 is positioned on the inner side of the outer rocker arm 3. Specifically, one end of the inner rocker arm 4 is hinged with the hinge arm 2 through a first pin shaft 7, and the other end of the inner rocker arm 4 is hinged with the hinge cup 1 through a second pin shaft 8; also, one end of the outer rocker arm 3 is hinged to the hinge arm 2 through a third pin 9, and the other end of the outer rocker arm 3 is hinged to the hinge cup 1 through a fourth pin 10. The hinge cup 1 can be hinged on the hinge arm 2 through the matching of the outer rocker arm 3 and the inner rocker arm 4.
Further, a damper 5 is arranged in the hinge arm 2, the damper 5 comprises a cylinder 501 and a piston rod 502, and the inner rocker arm 4 and the piston rod 502 are in transmission connection through a linkage block 6. Therefore, when the hinge cup 1 is hinged and closed relative to the hinge arm 2, the hinge cup 1 drives the inner rocker arm 4 to swing, and the inner rocker arm 4 drives the linkage block 6 to swing so as to drive the piston rod 502 to move relative to the cylinder 501, so that the damping closure of the hinge cup 1 is realized. In addition, the linkage block 6 is further provided with a protrusion 601, and when the hinge cup 1 is completely hinged and closed, the protrusion 601 on the linkage block 6 is abutted against the first pin shaft 7, so that the movement stroke of the piston rod 501 in the damper 5 can be limited.
Therefore, by arranging the bulge 601 on the linkage block 6, after the hinge is closed, the bulge 601 can be abutted with the first pin shaft 7 arranged on the inner rocker arm 4, so that the movable stroke of the piston rod 502 of the damper 5 can be limited, and the piston rod 502 is prevented from further moving forwards to cause locking.
In this embodiment, the second pin 8 and the fourth pin 10 are integrally formed into a U-shaped structure; the damper 5 is a hydraulic cylinder.
Referring to fig. 3-5, the linkage block 6 has a U-shaped structure, and first bosses 602 are protruding on two sides of the linkage block, and a limiting groove 401 for the first bosses 602 to slide in to realize transmission connection is provided on the inner rocker arm 4. Preferably, the limiting groove 401 is an arc groove, and one end of the limiting groove is provided with an opening, so that the first boss 602 is convenient to be assembled and clamped in. In addition, two lugs 603 are arranged on the linkage block 6 at intervals, and one end of the piston rod 502 extends into the space between the two lugs 603 and passes through a bolt 12 to realize the hinge connection between the two lugs 603, so that the transmission connection between the linkage block 6 and the piston rod 502 is realized.
In the present embodiment, the linkage block 6 is hinged to the hinge arm 2 through a fifth pin 11.
Therefore, the first bosses 602 are arranged on the two sides of the linkage block 6, and the first bosses 602 are clamped in the limit grooves 401 of the inner rocker arm 4 and slide, so that the transmission connection between the two can be realized; in addition, through setting up first boss 602 in order to replace the axis body, when reduce cost for hinge structure is succinct more, installs and removes more conveniently.
Referring to fig. 2-3, two sides of the inner rocker arm 4 are convexly provided with second bosses 403, and the end surfaces of the second bosses 403 are abutted against the inner side walls of the hinge arms 2; in addition, the hinge structure further comprises an elastic piece 14, and the inner rocker arm 4 is provided with an arc protrusion 402; the elastic member 14 includes a first elastic arm 1401 and a second elastic arm 1402, the first elastic arm 1401 being pressed against the hinge arm 2, the second elastic arm 1402 being pressed against the circular arc protrusion 402; the elastic element 14 generates a closing force on the hinge cup 1 via the inner rocker arm 4.
Therefore, the second bosses 403 are arranged on two sides of the inner rocker arm 4, the second bosses 403 are abutted against the inner side walls of the hinge arms 2 to realize the bearing of the door body, and meanwhile, the contact area between the second bosses 403 and the hinge arms 2 is small, so that the rotating friction force between the second bosses and the hinge arms can be effectively reduced in the hinge closing process, and the service life of the hinge is prolonged.
In this embodiment, the elastic member 14 is a torsion spring, two ends of the torsion spring form a first elastic arm 1401, and a middle of the torsion spring forms a second elastic arm 1402.
In this embodiment, the second boss 403 is provided with an avoidance hole 404 through which the first pin 7 can pass.
Referring to fig. 1-2, the hinge structure further includes a base 15, the hinge arm 2 is slidably sleeved on the outer side of the base 15, the cylinder 501 of the damper 5 is hinged to the hinge arm 2 through a rotating shaft 13, and first long holes 1503 slidably matched with the rotating shaft 13 are formed on two sides of the base 15. In addition, a first threaded hole 201 is formed on one side of the top of the hinge arm 2, a second long hole 1501 is formed at the top of the base 15 corresponding to the first threaded hole 201, and a first threaded connector 16 in threaded engagement with the first threaded hole 201 is inserted into the second long hole 1501. A third long hole 202 is formed on the other side of the top of the hinge arm 2, a second threaded hole 1502 is formed on the top of the base 15 corresponding to the position of the third long hole 202, and a second threaded connector 17 in threaded fit with the second threaded hole 1502 is penetrated in the third long hole 202.
Thus, when the first threaded connector 16 is rotated, the hinge arm 2 and the hinge cup 1 can move up and down relative to the base 15 through the threaded engagement between the first threaded connector 16 and the first threaded hole 201; when the second threaded connection 17 is turned and separated from the second threaded hole 1502, the hinge arm 2 can be manually moved to move the hinge arm 2 along the guiding direction of the second long hole 1501 relative to the base 15, and after the second threaded connection 17 is adjusted to a proper position, the second threaded connection is then screwed with the second threaded hole 1502. Thereby, by adjusting the first threaded connection 16 and the second threaded connection 17, an adjustment of the distance between the cabinet door and the cabinet body can be achieved.
In summary, the anti-jamming buffer hinge structure provided by the utility model has the following beneficial effects:
according to the anti-jamming buffering hinge structure, the protrusion 601 is arranged on the linkage block 6, and after the hinge is closed, the protrusion 601 can be abutted against the first pin shaft 7 arranged on the inner rocker arm 4, so that the movable stroke of the piston rod 502 of the damper 5 can be limited, and the piston rod 502 is prevented from being jammed due to further forward movement.
The anti-seizing buffering hinge structure of the utility model is characterized in that the first bosses 602 are arranged on the two sides of the linkage block 6, and the first bosses 602 are clamped in the limit grooves 401 of the inner rocker arm 4 and slide, so that the transmission connection between the two is realized; by arranging the first boss 602 to replace the shaft body, the hinge structure is simpler and the assembly and disassembly are more convenient while the cost is reduced.
And (III) in the anti-jamming buffer hinge structure, the second bosses 403 are arranged on two sides of the inner rocker arm 4 and are abutted against the inner side wall of the hinge arm 2 so as to realize the bearing of the door body, and meanwhile, the contact area between the second bosses 403 and the hinge arm 2 is smaller, so that the rotating friction force between the second bosses and the hinge arm 2 can be effectively reduced in the closing process of the hinge, and the service life of the hinge is further prolonged.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or be indirectly connected to the other element.
It should be understood that the terms "top," "bottom," "inner," "outer," and the like indicate an orientation or a positional relationship based on that shown in the drawings, and are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the modules or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Furthermore, in the description of the present utility model, the meaning of "a plurality", "a number" is two or more, unless explicitly defined otherwise.
The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (10)

1. The utility model provides a dead buffering hinge structure of anti-sticking, its characterized in that includes hinge cup, hinge arm and rocking arm subassembly, the rocking arm subassembly includes outer rocking arm and interior rocking arm, outer rocking arm with the both ends of interior rocking arm all respectively with the hinge cup reaches the hinge arm articulates, wherein:
a damper is arranged in the hinge arm and comprises a cylinder body and a piston rod, and the inner rocker arm is in transmission connection with the piston rod through a linkage block;
one end of the inner rocker arm is hinged with the hinge arm through a first pin shaft, and a bulge is arranged on the linkage block;
when the hinge cup is hinged and closed relative to the hinge arm, the hinge cup drives the inner rocker arm to swing, so as to drive the linkage block to swing to drive the piston rod to move relative to the cylinder body, and further realize damping closing of the hinge cup; when the hinge cup is completely hinged and closed, the protrusion is abutted with the first pin shaft to limit the moving stroke of the piston rod.
2. The anti-seize buffering hinge structure of claim 1, wherein the two sides of the linkage block are provided with first bosses, and the inner rocker arm is provided with limiting grooves for the first bosses to be seized in for realizing transmission.
3. The anti-seize buffering hinge structure according to claim 1, wherein the linkage block is further provided with two lugs arranged at intervals, and one end of the piston rod extends into between the two lugs and is hinged with the two lugs through a bolt.
4. The anti-seize buffering hinge structure according to claim 1, wherein second bosses are arranged on two sides of the inner rocker arm, and end faces of the second bosses are abutted against inner side walls of the hinge arms; and the second boss is provided with an avoidance hole through which the first pin shaft can pass.
5. The anti-seize buffering hinge structure of claim 1, wherein the other end of the inner rocker arm is hinged with the hinge cup through a second pin shaft; one end of the outer rocker arm is hinged with the hinge arm through a third pin shaft, and the other end of the outer rocker arm is hinged with the hinge cup through a fourth pin shaft;
the second pin shaft and the fourth pin shaft are integrally formed into a U-shaped structure.
6. The anti-seize cushioning hinge structure of any one of claims 1-5, further comprising an elastic member, wherein:
the inner rocker arm is provided with an arc bulge; the elastic piece comprises a first elastic arm and a second elastic arm, the first elastic arm is pressed against the hinge arm, and the second elastic arm is pressed against the arc-shaped bulge;
the elastic piece generates closing force to the hinge cup through the inner rocker arm.
7. The anti-seize buffering hinge construction of claim 6, wherein the elastic member is a torsion spring, both ends of the torsion spring are respectively formed with a first elastic arm, and a middle part of the torsion spring is formed with a second elastic arm.
8. The anti-stiction cushioning hinge structure of claim 1, further comprising a base, the hinge arm slidably nested outside the base, wherein:
the cylinder body of the damper is hinged with the hinge arm through a rotating shaft, and first long holes which are in sliding fit with the rotating shaft are formed in two sides of the base.
9. The anti-seize buffering hinge structure of claim 8, wherein a first threaded hole is formed in one side of the top of the hinge arm, a second long hole is formed in the top of the base corresponding to the first threaded hole, and a first threaded connecting piece in threaded fit with the first threaded hole is arranged in the second long hole in a penetrating mode.
10. The anti-seize buffering hinge structure according to claim 9, wherein a third long hole is formed in the other side of the top of the hinge arm, a second threaded hole is formed in the top of the base corresponding to the position of the third long hole, and a second threaded connecting piece in threaded fit with the second threaded hole is arranged in the third long hole in a penetrating mode.
CN202321074750.4U 2023-05-06 2023-05-06 Anti-jamming buffering hinge structure Active CN219773922U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202321074750.4U CN219773922U (en) 2023-05-06 2023-05-06 Anti-jamming buffering hinge structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202321074750.4U CN219773922U (en) 2023-05-06 2023-05-06 Anti-jamming buffering hinge structure

Publications (1)

Publication Number Publication Date
CN219773922U true CN219773922U (en) 2023-09-29

Family

ID=88136569

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202321074750.4U Active CN219773922U (en) 2023-05-06 2023-05-06 Anti-jamming buffering hinge structure

Country Status (1)

Country Link
CN (1) CN219773922U (en)

Similar Documents

Publication Publication Date Title
US11543135B2 (en) Hinge assembly with slow close and/or slow open characteristics
US8256064B2 (en) Refrigerator and/or freezer with hinge
US10451291B2 (en) Hinge assembly with slow close and optional slow open characteristics
EP1555372B1 (en) Hinge device
US8561259B2 (en) Dampening hinge
US8082629B2 (en) Hinge with reduced bulkiness for vertical-movement doors
US11248406B2 (en) Flap fitting for a piece of furniture, side wall of a body of a piece of furniture and piece of furniture comprising a side wall
KR20190113967A (en) Door hinge with cushioning
US10704311B1 (en) Appliance lid hinge
KR20150029604A (en) Decelerated hinge for furniture
US20110316401A1 (en) Front Frame Hinge For Appliance Door
CN109715900B (en) Damper device
CN219773922U (en) Anti-jamming buffering hinge structure
CN107989497B (en) Big cover position furniture hinge
CN219864613U (en) Buffer hinge structure
CN111456577A (en) Integrated optimization structure of damping hinge
CN214330284U (en) Furniture buffering hinge
CN220101006U (en) Hinge with buffer function
CN215255465U (en) Bidirectional buffering upturning door hinge with linkage mechanism
CN220800804U (en) Electric cooking device with double doors
CN219864588U (en) Hinge structure with two-way buffering
CN215332171U (en) Firm assembly structure of formula hinge of buryying
CN220434515U (en) Buffer type door closing hinge
CN217950987U (en) Straight arm damping hinge device
CN219471855U (en) Embedded adjustable buffer hinge structure

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant